Prospects for observation of neutrino-nuclear neutral current coherent scattering with two-phase Xenon emission detector

Abstract

We propose to detect and to study neutrino neutral current coherent scattering off atomic nuclei with a two-phase emission detector using liquid xenon as a working medium. Expected signals and backgrounds are calculated for two possible experimental sites: Kalinin Nuclear Power Plant in the Russian Federation and Spallation Neutron Source at the Oak Ridge National Laboratory in the USA. Both sites have advantages as well as limitations. However the experiment looks feasible at either location. Preliminary design of the detector and supporting R&D program are discussed. ___________________________________

Liquid noble gas detectors for low energy particle physics

“…The team plan to use two arrays of low-background Hamamatsu R11410-10 photomultipliers (19 phototubes each). The mean expected number of photoelectrons per electron in the secondary scintillation region is 80 [418].…”

Thermal stabilization system for the RED-100 liquid-xenon emission detector

“…The developed system helps to minimize the material budget near the RED-100 setup with the aim of lowering the radioactive background level in the detector. The described thermostatting system is expected to be used to maintain the serviceability of the liquid-xenon RED-100 detector in the experiment aimed at detecting the effect of coherent neutrino scattering from heavy nuclei [1,2]. …”

“…Power W removed from the cooled object is proportional to the thermosyphon cross section and the temperature gradient along its length and is inversely proportional to sum L = L C + L H : (1) where k is the thermosyphon thermal conductivity, and A is the thermosyphon cross section.…”

“…The RED-100 liquid-xenon emission detector developed by the Russian Emission Detectors (RED) collaboration will be used to detect and study the effect of coherent neutrino scattering from heavy nuclei [1,2]. The idea behind the particle detection in two-phase emission detectors with noble gases used as a working medium was described in detail in the monograph [3].…”

A controllable voltage divider for Hamamatsu R11410-20 photomultipliers for use in the RED 100 emission detector

“…The RED 100 liquid xenon based emission detec tor is being created by the efforts of the RED (Russian Emission Detectors) collaboration for detecting and investigating the effect of coherent neutrino scattering off heavy nuclei [1]. The principle of particle detection in two phase emission detectors that use noble gases as the working media is illustrated in Fig.…”